// case studies / portfolio

Selected work, shipped.

Custom websites, online stores and web apps SISL.PL has built for clients across Poland — from boutique studios and restaurants to e-commerce platforms and SaaS products.

7
projects shipped
5
years in business
100%
delivered on time
<24h
response time
// all_projects.list

From wireframe to production.

Scrutarius — antiques buyer — Business site
Business site // Scrutarius

Scrutarius — antiques buyer

Lead-gen site for a watch & antiques buyer. Victorian brand with a live clock in the logo, local SEO and a 59 KB first paint.

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POLMAR — firewood — Business site
Business site // Polmar

POLMAR — firewood

Site for a firewood seller: pricing, phone orders, delivery range and trust sections (13 years, honest volume). Built for fast contact and conversion.

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Co mam zjeść? — food map — Web app
Web app // SISL

Co mam zjeść? — food map

Interactive map and ranking of eateries reviewed by YouTubers — 1048 spots, filters by cuisine, city and rating, plus 'near me' search. Built with SISL.

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SISL Battle Map: Real-Time Conflict Data Platform — Web Application / Data Platform
Web Application / Data Platform // SISL

SISL Battle Map: Real-Time Conflict Data Platform

Real-time interactive conflict map aggregating 270+ daily events from 10 regions. Features custom 4-language translation engine, historical backfill, and a performant freemium API for OSINT analysts, journalists, and…

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mockql — Web app
Web app // SISL

mockql

MockQL is a hosted GraphQL mock server that turns any SDL schema into a live endpoint in one click — no backend setup, no resolver boilerplate, no fixtures. An AST-driven engine infers behavior for every type (scalars,…

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PgX-Ray - Postgres EXPLAIN Visualiser — Web app
Web app // SISL

PgX-Ray - Postgres EXPLAIN Visualiser

A client-side visualiser for Postgres EXPLAIN (ANALYZE, FORMAT JSON) plans — paste the JSON, get an interactive graph with heatmap-coloured hotspots and automatic "Smart Insights" that flag sequential scans,…

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Hookzy — Web app
Web app // SISL

Hookzy

Check if your webhook works

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Got a project in mind?
Let's ship it.

24-hour quote turnaround. Fixed-price offers when scope is clear. Hourly when it's not. We'll tell you which one fits before you ask. Public pricing: /pricing. Need a Magento+Comarch Optima integration? See SISL Optima Connector.

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